Zepbound Protein Calculator

Estimate your daily protein needs while using Zepbound (tirzepatide) to support muscle retention and weight-loss goals. Provides both per-day protein targets and easy per-meal guidance.

Weight Enter your current weight

Weight Unit Select the unit used for weight

Activity Level Activity influences protein needs — higher activity → higher protein

Diet Goal Choose the main goal you're working toward

Zepbound (tirzepatide) dose Weekly dose in mg (e.g., 5 mg/week). Used for context — does not change the formula automatically.

Meals per day Used to estimate protein per meal

Adjust protein emphasis: Normal Move right to increase recommended protein (useful during aggressive weight loss or heavy lifting)

Calculate from estimated lean body mass (optional)

If checked, protein target is based on estimated lean body mass (uses a simple formula).

Quick Examples:

How to Use This Calculator

Enter your weight and select the unit.
Choose your activity level and primary goal.
Enter your Zepbound weekly dose for context (does not change the formula).
Click Calculate to see recommended protein per day and per meal.

Formula Used

Protein (g/day) = body_mass_for_calc_kg × protein_factor × slider_multiplier

Where:

body_mass_for_calc_kg = weight in kg (or estimated lean body mass if selected)
protein_factor = chosen factor based on activity & goal (range 1.2–2.0 g/kg)
slider_multiplier = 0.9, 1.0, or 1.15 depending on the slider (lower/normal/higher emphasis)

Example Calculation

Real-World Scenario:

John weighs 90 kg, is moderately active and wants to lose weight while preserving muscle. Recommended protein factor = 1.6 g/kg, slider at Normal (1.0).

Given:

Weight = 90 kg
Protein factor = 1.6 g/kg
Slider multiplier = 1.0

Calculation:

Protein = 90 × 1.6 × 1.0 = 144 g/day

Result: 144 g protein per day (≈ 48 g per meal if 3 meals/day)

Why This Calculation Matters

Practical Applications

Preserving lean mass during weight loss on Zepbound
Supporting muscle growth while using appetite-suppressing medications
Estimating per-meal protein targets for meal planning

Key Benefits

Simple, evidence-informed protein ranges
Quick per-meal guidance
Shareable results and PDF export

Common Mistakes & Tips

Always increase protein targets when training or during calorie deficits to help preserve muscle mass.

For individuals with high body fat, estimating lean body mass gives a more accurate protein target — enable the LBM option to use a simple estimator.

Frequently Asked Questions

This calculator provides informational estimates only. Consult a registered dietitian or physician for personalized medical or nutritional advice.

Zepbound may reduce appetite and body weight — this tool helps increase protein density in your diet but does not replace professional guidance.

References & Disclaimer

Disclaimer

This calculator is for informational purposes only and does not replace medical or dietetic advice. Consult your healthcare provider before changing medications or major dietary plans.

References

PubMed / NCBI - Research articles on protein needs and weight-loss medications.
American College of Sports Medicine - Guidelines on protein for athletes and active adults.
Academy of Nutrition and Dietetics - Practical guidance for protein intake.

Accuracy Notice

Calculations use approximate multipliers and simple estimators. They are intended to give practical guidance, not clinical diagnosis.

About the Author

Kumaravel Madhavan

Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.

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Tags:

health nutrition-diet-planning zepbound protein medical body weight

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